The Items Apollo 11 Left behind on the Moon

Aldrin Looks Back at Tranquility Base
Buzz Aldrin Looks Back at Tranquility Base just after deploying the Early Apollo Scientific Experiments Package (EASEP). Credit: NASA.

July 21st 1969. The time is 2:56 UTC, Neil Armstrong is taking the first steps on the moon, 20 minutes later Buzz Aldrin is following. The landing site looks clean apart from the big lander that is their lift home. By the end of the two hour EVA on the lunar surface the site would be walked over, science experiments laid out, and a pile of rubbish left in a pit. A view you don’t get to see in the images from Apollo 11, the astronauts left over 100 items on the lunar surface. Some commemorative, but mostly items they didn’t need for the return journey.

The plaque
The plaque attached to the lunar lander, with a message from all mankind, just in case some other being finds it. It commemorates the first steps on the Moon. Credit: NASA.

Famously landing in the sea of tranquillity, the Eagle lander has a number of official commemorative items attached to it. The main one is a plaque proclaiming “Here men from planet Earth first set foot upon the Moon. July 1969, A.D. We came in peace for all mankind.” Under the “we come in peace” is a golden replica of an olive branch. Nearby is a small aluminium capsule with a tiny Silicon disc inside. It contained on it messages from four US presidents, and seventy three other heads of state. It was sketched onto it in microscopic lettering, with the wording found here. There are also a few non official items taken there by the astronauts. An Apollo 1 patch in memory of Roger Chaffee, Gus Grissom, and Ed White who died in January 1967 in a fire inside the first Apollo capsule. They also left behind two military medals that belonged to Yuri Gagarin and Vladimir Komarov, both famous USSR cosmonauts. It showed the respect these men had for Soviet cosmonauts who had achieved so many firsts, and went through the same trials and tests they did.

The Apollo 1 patch
The patch for the famous Apollo 1 where Roger Chaffee, Gus Grissom, and Ed White tragically died in a fire. The patch was left on the Moon. Credit: NASA

On top of this they left the science experiments that they had used, such as the passive seismic experiment. The experiment that used meteorite impacts on the surface to map the inside structure of the Moon. They also placed a master reflector so that scientists could measure the distance from Earth precisely. This retroreflector still works, and if you have access to a powerful enough laser you can measure it yourself. They also had to pick up lots of moon rocks and moon dust as part of the science mission. They used sample scoops, scales and even a small hammer. There are also many specific tools that were needed, but were discarded before the return journey.

Map of Tranquillity base
Map of Tranquillity base including the Toss Zone where all the rubbish was discarded. Credit: NASA

Overall they left roughly 106 random bits if rubbish at the launch site. Including lots of tools like the hammers, chisel and brushes needed for sampling; astronaut EVA gear such as the over boots and and life support systems; and actual rubbish like the empty food bags, some armrests they wanted to dispose of; a TV camera; insulation blanket; pins and plastic covers for items like the flag (and the flag itself) plus the urine, defecation and sickness bags, although there is no word on whether they were used. They threw all the items into an area behind the lander known as the “Toss Zone”, basically just a rubbish pit.

Buzz with science
Buzz carrying science experiments to the required place slightly away from tranquility base. Credit: NASA

The astronauts left a surprisingly large amount of stuff on the Moon, but it does make sense, as they needed that weight to be replaced with the 300 kg of Moon rocks that they wanted to bring back, so they just left it all there. There is a full list of the items on this webpage, and its worth a look. Archived by the Lunar Legacy Project, they count it as over 106 items. Depending on how you count it, there can be over 116 items left by the Apollo Astronauts.

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